Silencing and cushioning device for valve-actuating levers



Feb.10.1925.

R.KOEHLER SILENGING AND CUSHIONING DEVICE FOR VALVE ACTUATING LEVERSFiled Aug. 22, 1921 /f7 :7e/7 for:

Patented Feb. 10, 1,925.

PATENT OFFICE.

RUDOLPH KOEHLER, F ST. LOUIS, MISSOURI.

SILENCING AND CUSHIONING DEVICE FOR VALVE-AGTUATING LEVERS.

Application mea august 22, 1921. serial No. 494,107.

To all {Lo/0m t may concern.' j

Be it known that I, RUDOLPH KOEHLER,

a citizen of the United States of America,

and a resident ot the city of St. Louis and l State of Missouri, haveinvented certain new and useful Improvements in a. Silencing andCushioning Device for Valve-Actuat` ing Levers, of which the followingis a specification.

The main ob-ject of this invention is to provideV an 'improvedattachment to 'an operating lever to prevent clattering thereof relativeto the part with which it is looperate.

A further object of the invention is to provide an improved cushioningdevice lto one end of an operating lever.

A further object of the invention is to provide an improved attachmentto a valve operating lever.

Other and further objects of the invention will be apparent from thefollowing detailed description taken in connection with the accompanyingdrawing in which the figure disclosesa valve operating lever used inconnection with an internal combustion motor and having this improvedattach ment secured to one end thereof.

With reference to the accompanying drawing 1 designates a portion of'anin ternal combustion motor vand, relatable thereto is a valve y2 havingan extending valve stemv 3. lior actuating-saidvalve in onev directionis a spring 4 bearing'against a washer 5 which is carried by the stem 3.

Extended horizontally above the motor is a stationarily held shaft 6 androclra-ble on said shaft is a lever 7- having one end in engagement withthe valve stem 3. The op posite end of said lever is provided with aninverted cup-shaped portion 8. Adjustably mountedwithin said cup-shapedpor-` tion is a bushing 9 and relatable therewith is` alock nut 10.

Seated within the bushing 9 is a coil spring 11 and secured to the lowerend of said spring is a seating portion 12, said seating portion beingengaged by the adjustable end 13 of an actuating rod'14, said rod at its50 lower end being `rovided with a roller 15 which engages e surface ofa cam 16 mounted on the cam shaft 17. The cam shaft and cam thereon isof usual construc- 4tion and are mounted withinthe crank case of themotor.

Heretofore valve actuating levers of internal combustion engines, vdueto both of the ends of each of the levers solidly bearing against theparts with which they are adapted to cooperate, produced a noise orclatter on account o-:E there. being a looseness or small amount of playbetween the .upper end of the valve stem and the valve end whichactuates on the valve stem. With this improvement, on account of therebeing cushioning means provided by the 'spring 11 bearing against theupper end ot the actuating rod 14, the end 18 of the lever 7 will alwaysbe in contact with the end of the' valve stem 3 as the spring 11 will atall times tend to force the cup-sha ed end of the lever upwardly andthere ore there will be no gap between the lever end 18 and the valvestem 3 and consequently no noise will be 4produced as there is no comingtogether action between the valve stem 3 and the end of thelever 18.

Forincreasing orvdecreasing the tension of the spring 11 manipulation ofthe bushinfr 9 is all that is required.

l claim :v

1. In an internal combustion motor the combination of' a valve, a leverfor said valve, a reciprocal rod for actuating said lever, an adjustablebushing carried by said lever, a spring seated in said bushing, and atake-upv member for said rod interposed between said rod 'and said sring, said bush; ing providing means for a justing the tension of saidspring.

42. In an' internal combustion motor the ombination` of a valve, a leverfor said valve, a. reciprocal rod for actuating said lever, 'anad'ustable bushing carriedv b y said lever, a yspring seated in saidbushing, and 9 a take-up member adjustably Isecured to l one end of saidrodinterposed between said rod and said spring, said bushing providingmeans for adjusting the tension of said spring, said take-up memberproviding means for adjusting said rod.

RUDOLPH KOEIHJER.

